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Ingibjörg Svala Jónsdóttir - Professor Emerita

Ingibjörg Svala Jónsdóttir

–

School of Engineering and Natural Sciences

Ingibjörg Svala Jónsdóttir

Professor Emerita

Location
Askja / N-246
Phone
525 - 4333
Email
isj [at] hi.is

Unit
Faculty of Life and Environmental Sciences
Website
https://tundraecology.hi.is/

Published works

2026

Lodgepole pine in IcelandNew Forests
Towards rainy high Arctic wintersJournal of Ecology

2025

Warming-Induced Effects on Microbial Communities and Nitrogen Cycling Capacity in Tundra Litter Are Modulated by Herb Abundance and Litter QualityGlobal Change Biology
Marine-derived nutrients shape the functional composition of High Arctic plant communitiesFunctional Ecology
Volcanic soils alleviate the allelopathic capacity of Empetrum nigrum in degraded tundra ecosystemsOikos
Intra-specific variability and sex influence allelopathic capacity of Empetrum nigrumNordic Journal of Botany
Topographical constraints on fractal dimension of transitional lava flow morphologiesBulletin of Volcanology
Emerging priorities in terrestrial herbivory research in the ArcticArctic Science
Borealisation of Plant Communities in the Arctic Is Driven by Boreal-Tundra SpeciesEcology Letters
Frequent failure of nutrients to increase plant biomass supports the need for precision fertilization in agricultureScientific Reports
Environmental Conditions Modulate Warming Effects on Plant Litter Decomposition GloballyEcology Letters
Special collectionArctic Science
Plant diversity dynamics over space and time in a warming ArcticNature
Interactions among nutrients govern the global grassland biomass–precipitation relationshipProceedings of the National Academy of Sciences of the United States of America
Impacts of large herbivores on mycorrhizal fungal communities across the ArcticEcography

2024

Increased biocrust cover and activity in the highlands of Iceland after five growing seasons of experimental warmingPlant and Soil
A lower bound on the rheological evolution of magma in the 2021 Fagradalsfjall FiresJournal of Volcanology and Geothermal Research
Goose grubbing and warming suppress summer net ecosystem CO₂ uptake differentially across high-Arctic tundra habitatsEcology
On the MoveGeophysical Research Letters

2023

A review of open top chamber (OTC) performance across the ITEX NetworkArctic Science
Estimating the effects of grazing exclusion on the seed bank in Icelandic rangelandsIcelandic Agricultural Sciences
Plant traits and associated data from a warming experiment, a seabird colony, and along elevation in SvalbardScientific data
Herbivory and warming have opposing short-term effects on plant-community nutrient levels across high-Arctic tundra habitatsJournal of Ecology
Long-term herbivore removal experiments reveal how geese and reindeer shape vegetation and ecosystem CO₂-fluxes in high-Arctic tundraJournal of Ecology

2022

The tundra phenology databaseArctic Science
Intraspecific trait variability is a key feature underlying high Arctic plant community resistance to climate warmingEcological Monographs
Winters are changingArctic Science
Circum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubsEcography
CO₂ and CH₄ exchanges between moist moss tundra and atmosphere on Kapp Linné, SvalbardBiogeosciences
The International Tundra Experiment (ITEX): 30 years of research on tundra ecosystemsArctic Science
Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundraArctic Science
Can bryophyte groups increase functional resolution in tundra ecosystems?¹Arctic Science

2021

Stomping in silenceFunctional Ecology
Species loss due to nutrient addition increases with spatial scale in global grasslandsEcology Letters
The effects of different management interventions on degraded rangelands in IcelandLand Degradation & Development
Long-term warming effects on the microbiome and nifH gene abundance of a common moss species in sub-Arctic tundraNew Phytologist
Stomping in silence: Conceptualizing trampling effects on soils in polar tundraFunctional Ecology
Decades of Recovery From Sheep Grazing Reveal No Effects on Plant Diversity Patterns Within Icelandic Tundra LandscapesFrontiers in Ecology and Evolution
Concentrations of sulphur and trace elements in subarctic soils and mosses in relation to geothermal power plants at Hengill, Iceland – ecological implicationsGeothermics
Experimental warming differentially affects vegetative and reproductive phenology of tundra plantsNature Communications
Multiscale mapping of plant functional groups and plant traits in the High Arctic using field spectroscopy, UAV imagery and Sentinel-2A dataEnvironmental Research Letters
Variable responses of carbon and nitrogen contents in vegetation and soil to herbivory and warming in high-Arctic tundraEcosphere
The effects of different management interventions on degraded rangelands in IcelandLand Degradation and Development
Forage quality in tundra grasslands under herbivoryJournal of Ecology

2020

High Arctic ecosystem states: Conceptual models of vegetation change to guide long-term monitoring and researchAmbio
Status and trends in Arctic vegetationAmbio
Interactions between winter and summer herbivory affect spatial and temporal plant nutrient dynamics in tundra grassland communitiesOikos

2019

Hiding in the backgroundPolar Biology
Faster nitrogen cycling and more fungal and root biomass in cold ecosystems under experimental warming: a meta‐analysisEcology
Warming shortens flowering seasons of tundra plant communitiesNature Ecology and Evolution
Hiding in the backgroundPolar Biology
Hiding in the background: community-level patterns in invertebrate herbivory across the tundra biomePolar Biology
Fertilisers mediate the short-term effects of sheep grazing in the Icelandic highlandsIcelandic Agricultural Sciences
Long-term warming effects on the microbiome and nitrogen fixation associated with the moss Racomitrium lanuginosum in Icelandic tundra
Author CorrectionNature Ecology and Evolution
Fertilisers mediate the short-term effects of sheep grazing in the Icelandic highlandsIcelandic Agricultural Sciences

2018

Plant functional trait change across a warming tundra biomeNature
Publisher Correction to: Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biomePolar Biology
Correction toPolar Biology
Circumpolar Arctic Vegetation ClassificationPhytocoenologia
The sheep in wolf's clothing? Recognizing threats for land degradation in Iceland using state-and-transition modelsLand Degradation and Development
The sheep in wolf's clothing? Recognizing threats for land degradation in Iceland using state-and-transition modelsLand Degradation & Development
The sheep in wolf‘s clothing? Recognizing threats for land degradation in Iceland using state-and-transition modelsLand Degradation and Development

2017

Assessing the Ecological Impacts of Extensive Sheep Grazing in IcelandIcelandic Agricultural Sciences
Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biomePolar Biology
Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biomePolar Biology
Greater temperature sensitivity of plant phenology at colder sitesGlobal Change Biology
Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biomePolar Biology

2016

Biotic interactions mediate patterns of herbivore diversity in the ArcticGlobal Ecology and Biogeography
Concentrations of sulphur and trace elements in semi-arid soils and plants in relation to geothermal power plants at Olkaria, KenyaGeothermics
The regional species richness and genetic diversity of Arctic vegetation reflect both past glaciations and current climateGlobal Ecology and Biogeography
Changing Arctic snow coverAmbio
Sheep grazing in the North Atlantic regionAmbio
Herbivory Network: An international, collaborative effort to study herbivory in Arctic and alpine ecosystemsPolar Science
Herbivory NetworkPolar Science

2015

Definition of sampling units begets conclusions in ecologyPeerJ
Disjunct populations of European vascular plant species keep the same climatic nichesGlobal Ecology and Biogeography
ErratumProceedings of the National Academy of Sciences of the United States of America

2014

Vistfræði mosa í ljósi loftslagsbreytingaNáttúrufræðingurinn
Herbivoría de zonas árticas y alpinas en el contexto del cambio globalEcosistemas

2013

Aphid-willow interactions in a high Arctic ecosystemGlobal Change Biology
Vegetation data from boreal tundra of the North Atlantic and North Pacific regions.Arctic Vegetation Archive
Air quality and plant eco-physiological responses around geothermal power plants in Iceland and Kenya
Phenological response of tundra plants to background climate variation tested using the International Tundra ExperimentPhilosophical Transactions of the Royal Society B: Biological Sciences

2012

The impacts of climate change on circumpolar biodiversityBiodiversity
Plot-scale evidence of tundra vegetation change and links to recent summer warmingNature Climate Change
Global assessment of experimental climate warming on tundra vegetationEcology Letters
The impacts of climate change on circumpolar biodiversityBiodiversity
Plot-scale evidence of tundra vegetation change and links to recent climate warmingNature Climate Change

2011

Diversity of plant life histories in the ArcticPreslia
Balancing positive and negative plant interactionsOecologia
Responses to mineral nutrient availability and heterogeneity in physiologically integrated sedges from contrasting habitatsPlant Biology

2010

Brief Summary of a North Atlantic treaty organization (NATO) advanced research workshop on global climate change and local adaptationIntegrated Environmental Assessment and Management
The connectivity of spring stopover sites for geese heading to arctic breeding groundsArdea
Erratum toOecologia
Food selection by barnacle geese (Branta leucopsis) in an Arctic pre-breeding areaPolar Research
Plant community properties predict vegetation resilience to herbivore disturbance in the ArcticJournal of Ecology
Vitnisburður steingervinga um þróun lífs á jörðinni.

2009

Seasonal and interannual dietary variation during winter in female svalbard reindeer (Rangifer tarandus platyrhynchus)Arctic, Antarctic, and Alpine Research
Herbivore impacts to the moss layer determine tundra ecosystem response to grazing and warmingOecologia
Palaeoceanography and climate changes off North Iceland during the last millenniumJournal of Quaternary Science

2008

Environmental impact on an arctic soil-plant system resulting from metals released from coal mine waste in Svalbard (78° N)Water, Air, and Soil Pollution

2007

Botany during the Swedish Antarctic expedition 1901-1903
Life history and host-plant relationships of the rare endemic Arctic aphid Acyrthosiphon calvulus in a changing environmentEntomologia Experimentalis et Applicata
Spring feeding by pink-footed geese reduces carbon stocks and sink strength in tundra ecosystemsGlobal Change Biology
Þróunarverkefni um landgræðsluskóla.Fræðaþing Landbúnaðarins
Temporal variability in plant and soil nitrogen pools in a high-Arctic ecosystemSoil Biology and Biochemistry
Arctic mosses govern below-ground environment and ecosystem processesOecologia

2006

Intensive grazing by Barnacle geese depletes High Arctic seed bankCanadian Journal of Botany
Grazing by captive Barnacle geese affects graminoid growth and productivity on SvalbardMemoirs of National Institute of Polar Research, Special Issue
Plant community responses to experimental warming across the tundra biomeProceedings of the National Academy of Sciences of the United States of America
Impact of warming and timing of snow melt on soil microarthropod assemblages associated with Dryas-dominated plant communities on SvalbardEcography

2005

Terrestrial ecosystems on SvalbardBiology and Environment
Phenotypic variation at different spatial scales in relation to environment in two circumpolar bryophyte speciesLindbergia
Arctic Tundra and Polar Desert Ecosystems
Biomass and nutrient responses of a clonal tundra sedge to climate warmingCanadian Journal of Botany

2004

Effects of simulated climate change on phenology and life history traits in Carex bigelowiiNordic Journal of Botany
Responses to projected changes in climate and UV-B at the species levelAmbio
Intraclonal variation in defence substances and palatabilityOikos
Botany in the West Antarctic Region: From Skottsberg to Modern Research.

2003

Terrestrial trophic dynamics in the Canadian ArcticCanadian Journal of Zoology
Leaf isotopic (δ¹³C and δ¹⁵N) and nitrogen contents of Carex plants along the Eurasian Coastal ArcticPolar Biology

2002

Genetic and environmental effects on morphology in clonal sedges in the Eurasian arcticAmerican Journal of Botany

2001

Genetic variation and clonal diversity in four clonal sedges (Carex) along the Arctic coast of EurasiaMolecular Ecology

2000

Genet age in marginal populations of two clonal Carex species in the Siberian ArcticEcography

1999

Measuring growth rate in bryophytes and lichens. Plant responses to Climate Change: Integration of ITEX discoveries.
Responses of Tundra plants to experimental warmingEcological Monographs
Extensive physiological integration in intact clonal systems of Carex arenariaJournal of Ecology
Large-scale differentiation and dynamics in tundra plant populations and vegetationAmbio
Vascular plants and mosses and their interactions in a changing climate: Comparison between Iceland and Northern Sweden.A terrestrial transect for Scandinavia/Northern Europe: Proceedings of the international Scantran conference.

1997

Responses of the clonal sedge, Carex bigelowii, to two seasons of simulated climate changeGlobal Change Biology
Extensive physiological integration: an adaptive trait in resource limited environments?

1996

Resource dynamics within Arctic clonal plantsPlant ecology in the subarctic Swedish Lapland
Clonal diversity and allozyme variation in populations of the arctic sedge Carex bigelowii (Cyperaceae)Journal of Ecology

1995

Fate of added nitrogen in a moss-sedge arctic community and effects of increased nitrogen deposition.Science of the Total Environment
Importance of sexual reproduction in arctic clonal plants and their evolutionary potential.Global change and arctic terrestrial ecosystems

1994

Effects of resource availability on integration and clonal growth in Maianthemum bifoliumFolia Geobotanica

1992

Clonal plants and environmental change: introduction to the proceedings and summaryOikos

1991

Effects of grazing on tiller size and population dynamics in a clonal sedge (Carex bigelowii)Oikos

1990

Intraclonal translocation of ammonium and nitrate nitrogen in Carex bigelowii Torr. ex Schwein. using ¹⁵N and nitrate reductase assaysNew Phytologist
Aspects of clonality in the Arctic: A comparison between Carex bigelowii and Lycopodium annotinum.

1989

Localized defoliation stress and the movement of ¹⁴C- photoassimilates between tillers of Carex bigelowiiOikos

1988

Interrelationships between different generations of interconnected tillers of Carex bigelowiiOikos

Keywords for Specialisation:

Impact of climate change

Plant-animal interaction

Byophyte-vascular plant interaction

Impact of land use

Microbial ecology